Ox horn type hydrogen escape pipe of hydrogen refueling station

Abstract

The utility model provides an ox horn type hydrogen blow-down pipe of a hydrogen refueling station. The hydrogen blow-down pipe comprises a blow-down vertical pipe, a top protection device and a blow-down single pipe access port, the height of a top pipe opening of the diffusing vertical pipe is at least higher than a first preset height of the highest point of facilities in the hydrogenation station and at least higher than a second preset height of the ground where the diffusing vertical pipe is located, and the first preset height is smaller than the second preset height; the top protection device is arranged at a top pipe opening of the diffusion vertical pipe and used for providing protection for the diffusion vertical pipe. The diffusing single pipe access port is formed in the side surface of the diffusing vertical pipe and is close to the bottom of the diffusing vertical pipe, and is used for accessing the diffusing single pipe and introducing hydrogen. The hydrogen diffusing vertical pipe provided by the embodiment of the utility model is simple in structure, not only can ensure the safe emission of hydrogen in a hydrogen refueling station, but also can meet the specified requirements of Technical Specifications for Hydrogen refueling stations.

Description

Technical Field

[0001] The utility model relates to the technical field of venting risers, and in particular to a "horn-shaped" hydrogen venting pipe of a hydrogen filling station. Background Art

[0002] According to the "Technical Specifications for Hydrogen Refueling Stations" currently issued by the state, the country currently attaches great importance to the safe discharge of hydrogen gas from hydrogen refueling stations. Existing hydrogen discharge measures at hydrogen refueling stations (such as the configuration of the venting system) cannot meet the requirements of the "Technical Specifications for Hydrogen Refueling Stations". Therefore, there is an urgent need to design a hydrogen venting device for hydrogen refueling stations to ensure the safe discharge of hydrogen gas from hydrogen refueling stations and meet the requirements of the "Technical Specifications for Hydrogen Refueling Stations". Utility Model Content

[0003] In order to solve the above problems, the purpose of the embodiment of the present utility model is to provide a "horn-shaped" hydrogen venting pipe for a hydrogen refueling station.

[0004] An embodiment of the present utility model provides a "horn-shaped" hydrogen vent pipe of a hydrogen refueling station, a vent riser, a top protective device and a vent single pipe access port; the height of the top pipe port of the vent riser is at least higher than a first preset height of the highest point of the facilities in the hydrogen refueling station, and at least higher than a second preset height of the ground where the vent riser is located, and the first preset height is lower than the second preset height; the top protective device is arranged at the top pipe port of the vent riser to provide protection for the vent riser; the vent single pipe access port is arranged on the side surface of the vent riser and close to the bottom of the vent riser, for connecting to the vent single pipe and introducing hydrogen.

[0005] Optionally, the diffusion riser includes: a first diffusion riser and a second diffusion riser; the first diffusion riser is located at the lower section of the diffusion riser, the second diffusion riser is located at the upper section of the diffusion riser, and the diameter of the first diffusion riser is larger than the diameter of the second diffusion riser.

[0006] Optionally, the single-diffusion pipe inlet is arranged on the side surface of the first diffusion riser.

[0007] Optionally, there are multiple single-tube discharge inlets, and each of the single-tube discharge inlets corresponds to a single-tube discharge with a different pressure level.

[0008] Optionally, the cross-sectional area of ​​the relief riser is larger than the sum of the cross-sectional areas of the discharge ports of the safety valves corresponding to the relief single pipes connected to the relief riser through the relief single pipe inlet.

[0009] Optionally, the top protective device is a bull-horn-shaped structure with the concave surface facing upward, and a water drop hole is provided on one side of the top protective device with the convex surface facing downward.

[0010] Optionally, the floor where the discharge standpipe is located is higher than the floor where the canopy of the hydrogen refueling station is located.

[0011] Optionally, the hydrogen discharge riser further comprises: a flame arrester, which is arranged near the top of the hydrogen discharge riser.

[0012] Optionally, the hydrogen release standpipe further comprises: a drain hole, the drain hole is located at the bottom of the release standpipe, and the bottom of the drain hole is connected to a drain pipe and a drain valve.

[0013] Optionally, the hydrogen release riser further comprises: an electrostatic grounding device, which is arranged at the bottom of the hydrogen release riser.

[0014] In the solution provided in the embodiment of the present invention, the hydrogen release riser has a simple structure, which can not only ensure the safe discharge of hydrogen in the hydrogen filling station, but also meet the requirements of the "Technical Specifications for Hydrogen Filling Stations".

[0015] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0017] Figure 1 The specific structural diagram of a "horn-shaped" hydrogen vent pipe for a hydrogen refueling station provided by an embodiment of the utility model is shown;

[0018] Figure 2 A schematic diagram showing a connection portion A between a first discharge riser and a second discharge riser in a hydrogen discharge riser provided by an embodiment of the present utility model is shown;

[0019] Figure 3 The specific structural diagram of the bottom of the hydrogen discharging standpipe provided in the embodiment of the present utility model is shown.

[0020] icon:

[0021] 1-Discharge riser, 2-Top protection device, 3-Discharge single pipe access port, 4-Flame arrester, 5-Drain hole, 6-Electrostatic grounding device, 11-First discharge riser, 12-Second discharge riser, 21-Downhole, 51-Drain pipe, A-Connection between first and second discharge riser, B-Discharge single pipe access part, D1-The floor where the discharge riser is located, D2-The floor where the canopy of the hydrogenation station is located. DETAILED DESCRIPTION

[0022] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0023] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of this utility model, "plurality" means two or more, unless otherwise specifically defined.

[0024] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integral connection; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0025] The utility model embodiment provides a "horn-shaped" hydrogen venting pipe for a hydrogen filling station, see Figure 1 As shown, Figure 1 The specific structural diagram of the hydrogen venting riser is shown. The hydrogen venting riser includes: a venting riser 1, a top protective device 2 and a venting single pipe inlet 3, wherein the top protective device 2 is a "horn type". The venting riser 1, as the name implies, is a pipe that can be set up on the horizontal ground, that is, the venting riser 1 can be set vertically on the ground surface, and can be set inside the hydrogen filling station to provide a channel for hydrogen discharge from the hydrogen filling station. Optionally, as Figure 1As shown, the floor level (D1) where the discharge riser 1 is located is higher than the floor level (D2) where the canopy of the hydrogen filling station is located.

[0026] In an embodiment of the present invention, the height of the vent riser 1 should be higher than the highest point of the facilities in the hydrogen station, for example, the height of the vent riser 1 should be higher than the highest point of the hydrogen station canopy, so as to achieve effective discharge of the hydrogen in the pipe out of the hydrogen station. Specifically, the height of the top nozzle of the vent riser 1 is at least higher than the first preset height of the highest point of the facilities in the hydrogen station, and at least higher than the second preset height of the ground where the vent riser 1 is located, and the first preset height is less than the second preset height. In an embodiment of the present invention, the first preset height can be 2 meters, and the second preset height can be 5 meters. In other words, the height of the top nozzle of the vent riser 1 can be at least 2 meters higher than the highest point of the canopy of the hydrogen station, for example, the vent riser 1 can be 2.05 meters higher than the canopy top; in addition, the height of the top nozzle of the vent riser 1 can be at least 5 meters higher than the ground where it is set, for example, the vent riser 1 can be 9.55 meters higher than the ground where it is located. Based on this, not only can hydrogen be effectively discharged from the hydrogen refueling station through the towering discharge riser 1, but it can also meet the requirements of the "Technical Specifications for Hydrogen Refueling Stations".

[0027] Furthermore, the hydrogen gas release standpipe also includes a top protection device 2. As the name implies, the top protection device 2 is a device provided at the top pipe opening of the release standpipe 1 to provide protection for the release standpipe 1. For example, the top protection device 2 can be an anti-rust and insect-proof net, a rain-proof device, etc. to prevent clogging by debris and intrusion of rain and snow. In addition, the hydrogen gas release standpipe also includes a release single pipe access port 3. The release single pipe access port 3 is provided on the side surface of the release standpipe 1 and close to the bottom of the release standpipe 1 to connect with the release single pipe ( Figure 1 The discharge single pipe access portion is shown by the reference numeral B in the figure) and is connected as a connection node between the discharge single pipe and the discharge riser 1, so that the hydrogen released by the discharge single pipe can enter the discharge riser 1 through the discharge single pipe access port 3 to achieve final discharge.

[0028] The hydrogen discharging riser provided in the embodiment of the present invention has a simple structure, which can not only ensure the safe discharge of hydrogen in the hydrogen refueling station, but also meet the requirements of the "Technical Specifications for Hydrogen Refueling Stations".

[0029] Alternatively, as Figure 1As shown, the venting riser 1 includes: a first venting riser 11 and a second venting riser 12. The first venting riser 11 is located at the lower section of the venting riser 1, and the second venting riser 12 is located at the upper section of the venting riser 1, and the diameter of the first venting riser 11 is larger than the diameter of the second venting riser 12. In other words, the lower end of the second venting riser 12 is inserted from top to bottom into the upper end of the first venting riser 11 for fixed connection (such as welding), so that the two sections of pipes form the venting riser 1. Specifically, the enlarged view of the connection part A of the first venting riser 11 and the second venting riser 12 can be seen in Figure 2 Specifically, in the embodiment of the present invention, the diameter of the first diffusion riser 11 is Φ140×8, and the length can be 5 meters; the diameter of the second diffusion riser 12 is Φ108×8, and the length can be 4.55 meters.

[0030] Optionally, the single-diffusion pipe inlet 3 is arranged on the side surface of the first diffusion riser 11 .

[0031] Optionally, there are multiple single-pipe discharge inlets 3, i.e., a single-pipe discharge riser 1 can be connected to multiple single-pipe discharges simultaneously through different single-pipe discharge inlets 3. Each single-pipe discharge inlet 3 corresponds to a single-pipe discharge with a different pressure level. For example, a single-pipe discharge riser 1 may be provided with two single-pipe discharge inlets 3, each corresponding to a single-pipe discharge with a different pressure level. It should be noted that the diameter of the single-pipe discharge can be DN50.

[0032] Optionally, the cross-sectional area of ​​the relief riser 1 is larger than the sum of the cross-sectional areas of the discharge ports of the safety valves corresponding to the relief single pipes connected to the relief riser 1 through the relief single pipe inlet 3 .

[0033] In the embodiment of the present invention, the cross-sectional area (or inner diameter) of the single discharge pipe for inputting hydrogen should be larger than the cross-sectional area (or diameter) of the discharge port of the safety valve arranged therein; the sum of the cross-sectional areas of the discharge ports of the safety valves corresponding to all the single discharge pipes connected to the discharge riser 1 through the single discharge pipe inlet 3 should be less than or equal to the cross-sectional area of ​​the discharge riser 1.

[0034] Alternatively, as Figure 1 As shown, the top protection device 2 is a bull horn-shaped structure with the concave surface facing upward, and a water drop hole 21 is provided on one side of the top protection device 2 with the convex surface facing downward. The aperture of the water drop hole 21 is D5.

[0035] Alternatively, as Figure 1 As shown, the hydrogen discharge riser further includes: a flame arrester 4, which is arranged near the top of the discharge riser 1 for further fire prevention.

[0036] Alternatively, as Figure 1 and Figure 3 ( Figure 3The hydrogen discharging standpipe further comprises: a drain hole 5, which is located at the bottom of the discharging standpipe 1 and is connected to a drain pipe 51 and a drain valve at the bottom of the drain hole 5, thereby reasonably considering the rainwater discharge function of the discharging standpipe 1. It should be noted that the drain valve can be a DN25 ball valve ( Figure 3 not directly shown).

[0037] Alternatively, as Figure 1 As shown, the hydrogen discharging riser further includes: an electrostatic grounding device 6 , which is arranged at the bottom of the discharging riser 1 .

[0038] In the embodiment of the present invention, the electrostatic grounding device 6 can be directly installed at the bottom of the discharge riser 1, or it can also be installed at the bottom of the sewage pipe 51, that is, at the very bottom of the discharge riser 1 (arranged within the effective lightning protection range). The electrostatic grounding device 6 can be a concrete cushion made of C30 or C15 concrete, thereby improving the safety factor of the hydrogen refueling station and meeting the requirements of the "Technical Specifications for Hydrogen Refueling Stations".

[0039] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technical solution that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present invention should be included in the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. A "horn-shaped" hydrogen vent pipe for a hydrogen refueling station, characterized in that: include: A discharge riser (1), a top protection device (2) and a discharge single pipe access port (3); The height of the top nozzle of the discharge riser (1) is at least higher than a first preset height of the highest point of the facilities in the hydrogen station, and at least higher than a second preset height of the ground where the discharge riser (1) is located, and the first preset height is lower than the second preset height; The top protection device (2) is arranged at the top pipe opening of the discharge riser (1) and is used to provide protection for the discharge riser (1); The single-tube discharge inlet (3) is arranged on the side surface of the discharge riser (1) and close to the bottom of the discharge riser (1), and is used to connect the single-tube discharge and introduce hydrogen; The venting riser (1) comprises: a first venting riser (11) and a second venting riser (12); The first diffusion riser (11) is located at the lower section of the diffusion riser (1), the second diffusion riser (12) is located at the upper section of the diffusion riser (1), and the diameter of the first diffusion riser (11) is larger than the diameter of the second diffusion riser (12); The cross-sectional area of ​​the relief riser (1) is greater than the sum of the cross-sectional areas of the discharge ports of the safety valves corresponding to the relief single pipes connected to the relief riser (1) via the relief single pipe inlet (3).

2. The "horn-shaped" hydrogen vent pipe of the hydrogen refueling station according to claim 1 is characterized in that: The single-pipe diffusion inlet (3) is arranged on the side surface of the first diffusion riser (11).

3. The "ox horn type" hydrogen vent pipe of the hydrogen refueling station according to claim 1 is characterized in that: There are multiple single-tube discharge inlets (3), and each single-tube discharge inlet (3) corresponds to a single-tube discharge with a different pressure level.

4. The "ox horn type" hydrogen vent pipe of the hydrogen refueling station according to claim 1 is characterized in that: The top protection device (2) is a bull horn-shaped structure with the concave surface facing upward, and a water drop hole (21) is provided on one side of the top protection device (2) with the convex surface facing downward.

5. The "ox horn type" hydrogen vent pipe of the hydrogen refueling station according to claim 1 is characterized in that: The floor where the discharge riser (1) is located is higher than the floor where the canopy of the hydrogenation station is located.

6. The "ox horn type" hydrogen vent pipe of the hydrogen refueling station according to claim 1 is characterized in that: Also includes: A flame arrester (4) is provided at a position close to the top of the discharge riser (1).

7. The "ox horn type" hydrogen vent pipe of the hydrogen refueling station according to claim 1 is characterized in that: Also includes: A sewage discharge hole (5), the sewage discharge hole (5) is located at the bottom of the discharge standpipe (1), and the bottom of the sewage discharge hole (5) is connected to a sewage discharge pipe (51) and a sewage discharge valve.

8. The "ox horn type" hydrogen vent pipe of the hydrogen refueling station according to claim 1 is characterized in that: Also includes: An electrostatic grounding device (6), wherein the electrostatic grounding device (6) is arranged at the bottom of the discharge riser (1).

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